What happens to your financial plan when your income drops

Living below your means is discipline. You already know that. You've got a number you try to stay under and most months you stay under it. That's more than most people manage, and I mean that.

So here's what I keep running into. A layoff hits, or a rough business quarter, and the person who had a tight budget six weeks ago suddenly has no budget at all. Not because they were bad with money. Because the plan they built was for the income they had, and there was never a version of it for the months when that income isn't there. Why would there be? It was working fine.

It just doesn't have a contingency mode. So when the gap shows up, the whole thing breaks.

This issue is about building that one layer before you need it. Not rebuilding your financial plan from scratch, just adding the part that handles a gap, which is the part that was never there.

Say you get laid off on a Thursday. By Tuesday you've got a job search spreadsheet going and you're already telling yourself it'll probably be a few months. And somewhere in there, without you thinking about it, the mortgage still drafts. Nobody paused it. Nobody called the bank. It just went out like it always does, and that's the part that gets people.

Here's where the expensive part comes in. Most people don't have a plan for that window. So they improvise. You're three weeks into a job search and the credit card is covering groceries because you haven't let yourself touch the Marcus savings yet. Your Roth contribution that was supposed to go out on the 15th just didn't happen. By the time a paycheck shows up again, there's a balance to pay down, a missed contribution month somewhere in the middle, and a vague feeling that something is different but you can't quite add up what.

That's the gap tax. Decisions made under pressure because there wasn't a plan for this specific window. Pure improvisation. (Nobody calls it that. I started calling it that at some point and it stuck. It's not a real term. I just think it's accurate.)

Anyway. That's what this is. A set of decisions you make now, before anything is wrong, so that when things go sideways you're not making them at 11pm on a Tuesday trying to figure out whether to pull from savings or wait one more week.

I want you to write down one number.

Your floor. What that means: the amount where if you're spending this or less, nothing breaks, nothing gets turned off, no late notices showing up. Your full budget doesn't count. Normal monthly spend doesn't either.

Pull out your last bank statement and go line by line. Rent goes on the list. Minimum payment on the card, on the list. Gas bill. Groceries. If you miss it and something bad happens in the next 30 days, it goes on the floor. Your gym doesn't survive that test. Most subscriptions don't. Automated savings transfer definitely doesn't. What's left is a number that's probably smaller than you'd guess.

You probably haven't written it down yet. Most people guess their floor is somewhere around what they normally spend, then they actually add it up and find it's lower than they thought, sometimes by a lot.

I did this the first time with a YNAB export. Took about ten minutes. What I came up with was genuinely surprising to me, and I'd been thinking about personal finance for years at that point.

Once you have both numbers, your normal spend and your floor, the distance between them tells you how much runway your savings can actually buy.

Pull up your bank account, checking plus savings, whatever's actually sitting there liquid, and divide that by your floor. What you get is months. Don't count the 401k in that number. I know it's tempting when the balance is big, but pulling from it early costs you the taxes plus a 10% penalty on top, and you don't need that problem on top of this one.

Now, if there's actually money coming in during the gap (unemployment, severance, a partner covering part of the shared expenses), you recalculate. Subtract whatever's actually coming in from your floor. That's your monthly shortfall. Divide your liquid savings by that number. What you end up with is what you're actually working with.

Here's why you want to do this before you need it. I ran this with someone a while back. They came in saying they had maybe five months before things got tight. And that was true, technically, if you assumed they'd get zero income during the gap. But they already had an unemployment approval in their email that they hadn't even opened yet. $1,600 a month. We did the math. Actual shortfall was $1,300. Same $15,000 in savings. Eleven months of runway, not five. They'd been stress-planning around the wrong number for two weeks.

Eleven months of runway is a job search you can actually run. You can pass on the role that pays $12k less and has a two-hour commute. Wait for the interview that came from a warm intro instead of a cold application. Six weeks of runway is none of that. It's the first offer, accepted.

Whatever your normal budget was, forget it for now. You're not on that one anymore.

What you're building is a gap budget. What's coming in minus what has to go out. For the income side, write down only money that's already cleared. Unemployment deposit you've gotten at least once, that's real. Severance that hit your account last week, real. Your partner's half of the mortgage, real. If someone owes you money, or a check might come, or a client said they'd pay by the end of the month, none of that counts yet. Promises don't pay the rent.

Subtract that from your floor. What savings covers every month until income comes back is what's left.

This also tells you what to pause. Pause isn't the same as cancel. Those are different. Retirement contributions above the match, streaming subscriptions, gym memberships, automated savings transfers beyond your emergency fund. All of those go on hold. You write down each one and, right next to it, the restart condition.

Mine says two paychecks at or above the threshold before anything restarts. I learned that the hard way. I had a freelance project close late once and the deposit hit and I felt like I was back. Turned the contributions back on, loosened up on the spending. Then the next month was quiet again and I was annoyed at myself. One good month isn't a recovery. Two in a row starts to look like one.

Write the restart condition now, while nothing is wrong. When income comes back, people tend to just start spending again. Takes a few months to notice they're back on track, and it's hard to explain why you didn't catch it sooner when it's just a normal feeling of things being okay again.

The moment income comes back, the savings draw stops. That part's automatic, nothing to do.

What's not automatic is the order everything else restarts in, and this is where people mess it up. The instinct when a paycheck hits again is to turn everything back on at once. I did that once: contributions, automated transfers, loosened up the discretionary spending, all in the same month. Felt like I was back. And technically I was, except the emergency fund still had a hole in it from the gap, and I just kept building on top of a foundation with a gap in it.

So: 401k goes back to the employer match level, and stops there for now. If the emergency fund got used during the gap, fill that back up before anything else changes. Only once the fund is back to where it was do the paused transfers come back on. Then, over the next couple of months, the rest.

Month one of a new job isn't the moment to catch up on everything at once. The runway you built buys you the ability to do this slowly and in order, which is the point.

Fill these in now. Screenshot it, put it somewhere you'll actually find it when things are going sideways.

Your floor is housing, minimum debt payments, utilities, health coverage, groceries. That's it. One number.

Basic runway is that floor number divided into your liquid savings. Months. Don't count the 401k.

What's actually coming in is only money that's already deposited. Unemployment you've received, a monthly cut of severance that's already hit, a partner's share of shared costs. If you're waiting on it, it doesn't count yet.

Adjusted runway: subtract what's coming in from your floor. That's your real monthly shortfall. Divide savings by that. This number is almost always better than the basic one, sometimes by a lot, which is the whole point of running it before you need it.

The resume trigger is the take-home level where the gap budget stops. I use two consecutive months at or above that level, because one good month fooled me once and I ended up annoyed at myself in month three.

When income returns: savings draw stops automatically. Then 401k back to the match. Then fill the emergency fund if it got touched. Paused transfers come back last.

I want to be clear about what I'm describing here, because there's a version of this that doesn't apply.

This is for a gap you can see the other side of. A job search that'll probably resolve in a few months. A leave with a return date on the calendar. A slow quarter that's still a quarter, not a new normal. If you're not sure which of those you're in, that's the actual first problem to solve, not the budget. This framework assumes the gap ends.

It also doesn't fix starting from zero. If you run the runway math and the answer comes out to three weeks, the gap budget still matters, the floor still matters, the restart condition still matters. You just have less room between the decisions and the consequences. Things move faster and there's less space to get it wrong. That's a different version of hard, and it's worth knowing going in.

Issue #17 is benefits enrollment. Most people click through it in about six minutes and pick whatever they had last year, which is often fine and sometimes costs them real money. Next week we'll go through which decisions actually matter in a typical package, and what questions are worth asking before you click submit.

— Wesley

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